The White House says the president cut short his visit because of "what's going on in the Middle East".

President Donald Trump is abruptly leaving the Group of Seven summit, departing a day early Monday as the conflict between Israel and Iran intensifies and the U.S. leader has declared that Tehran should be evacuated “immediately.

Donald Trump will leave the G7 summit in Canada early after issuing a stark warning for the immediate evacuation of Tehran, as the US president resisted signing a joint statement calling for de-escalation of Middle East hostilities.

Blasts have been heard in Tehran and sirens have sounded in Israel as US president convenes National Security Council.

President Donald Trump in about eight hours went from suggesting a nuclear deal remained “achievable” to urging Tehran’s 9.5 million residents to flee for their lives.

Israeli authorities have signaled that the barrage appears to have subsided, giving the all clear for people to leave their shelters. They said that emergency services were responding to reports of damage from the missiles and are providing treatment to several people with minor injuries.

BEIJING (Reuters) -The Chinese embassy in Israel has urged Chinese citizens to return home or leave the country via land border crossings as soon as possible, on grounds that the security situation has deteriorated and Israeli airspace remained closed.